Grain boundary interaction based on gradient crystal inelasticity and decohesion
Spannraft L, Ekh M, Larsson F, Runesson K, Steinmann P (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 178
Article Number: 109604
DOI: 10.1016/j.commatsci.2020.109604
Abstract
This paper presents a model for geometrically non-coherent grain boundary interaction premised on gradient-extended crystal inelasticity. The appropriate kinematics, the constitutive relations and the balance equations are established for a polycrystal including grain interaction. More specifically, this contribution proposes a coupling of the microtraction and grain boundary decoheion, which is represented as damage. As a consequence, decohesion exerts an impact on the standard tractions as well as on the microtractions along the grain boundaries. The appropriate modeling framework is assessed in terms of numerical results for a bicrystal that is subjected to simple shear. A comparison with the situation without such coupling effect shows that the microtractions along the grain boundary reduce for increasing damage and a microfree boundary is approached when the damage approaches unity.
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APA:
Spannraft, L., Ekh, M., Larsson, F., Runesson, K., & Steinmann, P. (2020). Grain boundary interaction based on gradient crystal inelasticity and decohesion. Computational Materials Science, 178. https://dx.doi.org/10.1016/j.commatsci.2020.109604
MLA:
Spannraft, Lucie, et al. "Grain boundary interaction based on gradient crystal inelasticity and decohesion." Computational Materials Science 178 (2020).
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